1999-08-28 00:22:10 +00:00
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.\" $FreeBSD$
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1999-06-27 19:29:15 +00:00
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.\"
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2007-04-30 18:29:36 +00:00
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.Dd April 30, 2007
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1993-06-12 14:58:17 +00:00
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.Dt FDISK 8
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2001-07-10 11:04:34 +00:00
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.Os
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1993-06-12 14:58:17 +00:00
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.Sh NAME
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.Nm fdisk
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2002-05-30 09:41:33 +00:00
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.Nd PC slice table maintenance utility
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1993-06-12 14:58:17 +00:00
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.Sh SYNOPSIS
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2000-11-20 16:52:27 +00:00
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.Nm
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2008-07-31 00:55:29 +00:00
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.Op Fl BIaipqstu
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1999-06-27 19:29:15 +00:00
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.Op Fl b Ar bootcode
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1997-06-03 21:24:39 +00:00
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.Op Fl 1234
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1996-11-06 14:08:39 +00:00
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.Op Ar disk
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2000-11-20 16:52:27 +00:00
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.Nm
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1999-06-27 19:29:15 +00:00
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.Fl f Ar configfile
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.Op Fl itv
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1996-11-06 14:08:39 +00:00
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.Op Ar disk
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1993-06-12 14:58:17 +00:00
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.Sh PROLOGUE
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In order for the BIOS to boot the kernel,
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certain conventions must be adhered to.
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Sector 0 of the disk must contain boot code,
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2002-04-18 16:25:18 +00:00
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a slice table,
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1993-06-12 14:58:17 +00:00
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and a magic number.
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2002-04-18 16:25:18 +00:00
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BIOS slices can be used to break the disk up into several pieces.
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2002-05-30 09:41:33 +00:00
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The BIOS brings in sector 0 and verifies the magic number.
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The sector
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2002-04-18 16:25:18 +00:00
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0 boot code then searches the slice table to determine which
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slice is marked
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2002-05-30 09:41:33 +00:00
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.Dq active .
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1999-06-27 19:29:15 +00:00
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This boot code then brings in the bootstrap from the
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2002-05-30 09:41:33 +00:00
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active slice and, if marked bootable, runs it.
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Under
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.Tn DOS ,
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you can have one or more slices with one active.
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The
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.Tn DOS
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1993-06-12 14:58:17 +00:00
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.Nm
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2002-05-30 09:41:33 +00:00
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utility can be used to divide space on the disk into slices and set one
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active.
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1993-06-12 14:58:17 +00:00
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.Sh DESCRIPTION
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1998-07-06 06:44:36 +00:00
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The
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2000-11-14 11:20:58 +00:00
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.Fx
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2002-05-30 09:41:33 +00:00
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utility,
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2002-04-18 16:25:18 +00:00
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.Nm ,
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2002-05-30 09:41:33 +00:00
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serves a similar purpose to the
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.Tn DOS
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utility.
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The first form is used to
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2002-04-18 16:25:18 +00:00
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display slice information or to interactively edit the slice
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2002-05-30 09:41:33 +00:00
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table.
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The second is used to write a slice table using a
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.Ar configfile ,
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1996-11-06 14:08:39 +00:00
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and is designed to be used by other scripts/programs.
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.Pp
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Options are:
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2002-05-30 09:41:33 +00:00
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.Bl -tag -width indent
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1996-11-06 14:08:39 +00:00
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.It Fl a
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2002-05-30 09:41:33 +00:00
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Change the active slice only.
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Ignored if
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1996-11-06 14:08:39 +00:00
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.Fl f
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is given.
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1999-06-27 19:29:15 +00:00
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.It Fl b Ar bootcode
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Get the boot code from the file
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.Ar bootcode .
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2001-07-18 07:12:46 +00:00
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Default is
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.Pa /boot/mbr .
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1999-08-23 11:06:19 +00:00
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.It Fl B
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2002-05-30 09:41:33 +00:00
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Reinitialize the boot code contained in sector 0 of the disk.
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Ignored if
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1999-08-23 11:06:19 +00:00
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.Fl f
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is given.
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1996-11-06 14:08:39 +00:00
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.It Fl f Ar configfile
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2002-04-18 16:25:18 +00:00
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Set slice values using the file
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1996-11-06 14:08:39 +00:00
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.Ar configfile .
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The
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.Ar configfile
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2006-12-12 15:26:25 +00:00
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only modifies explicitly specified slices, unless
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1996-11-06 14:08:39 +00:00
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.Fl i
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2002-04-18 16:25:18 +00:00
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is also given, in which case all existing slices are deleted (marked
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2002-05-30 09:41:33 +00:00
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as
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.Dq unused )
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before the
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1996-11-06 14:08:39 +00:00
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.Ar configfile
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2002-05-30 09:41:33 +00:00
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is read.
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The
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1996-11-06 14:08:39 +00:00
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.Ar configfile
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2002-05-30 09:41:33 +00:00
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can be
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.Sq Fl ,
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in which case standard input is read.
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See
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1998-07-06 06:44:36 +00:00
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.Sx CONFIGURATION FILE ,
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1996-11-06 14:08:39 +00:00
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below, for file syntax.
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.Pp
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2001-02-01 16:38:02 +00:00
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.Em WARNING :
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1996-11-06 14:08:39 +00:00
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when
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.Fl f
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2002-04-18 16:25:18 +00:00
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is used, you are not asked if you really want to write the slices
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2002-05-30 09:41:33 +00:00
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table (as you are in the interactive mode).
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Use with caution!
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1999-06-27 19:29:15 +00:00
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.It Fl i
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2002-05-30 09:41:33 +00:00
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Initialize sector 0 of the disk.
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2006-12-12 15:26:25 +00:00
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Existing slice entries will be cleared
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(marked as unused) before editing.
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(Compare with
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.Fl u . )
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2000-03-13 10:55:21 +00:00
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.It Fl I
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2006-12-12 15:26:25 +00:00
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Initialize sector 0 slice table
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2002-04-18 16:25:18 +00:00
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for one
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2000-03-13 10:55:21 +00:00
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.Fx
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slice covering the entire disk.
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2007-04-30 18:29:36 +00:00
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.It Fl p
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Print a slice table in
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.Nm
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configuration file format and exit; see
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.Sx CONFIGURATION FILE ,
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below.
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2008-07-31 00:55:29 +00:00
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.It Fl q
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Be quiet.
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Benign warnings (such as "GEOM not found") are suppressed.
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2000-03-10 22:03:00 +00:00
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.It Fl s
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Print summary information and exit.
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1996-11-06 14:08:39 +00:00
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.It Fl t
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2002-05-30 09:41:33 +00:00
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Test mode; do not write slice values.
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Generally used with the
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1996-11-06 14:08:39 +00:00
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.Fl f
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2002-05-30 09:41:33 +00:00
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option to see what would be written to the slice table.
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Implies
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1996-11-06 14:08:39 +00:00
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.Fl v .
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1999-06-27 19:29:15 +00:00
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.It Fl u
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2006-12-12 15:26:25 +00:00
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Update (edit) the disk's sector 0 slice table.
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2002-05-30 09:41:33 +00:00
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Ignored if
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1999-06-27 19:29:15 +00:00
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.Fl f
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is given.
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1996-11-06 14:08:39 +00:00
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.It Fl v
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2002-05-30 09:41:33 +00:00
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Be verbose.
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When
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1996-11-06 14:08:39 +00:00
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.Fl f
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is used,
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.Nm
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2002-04-18 16:25:18 +00:00
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prints out the slice table that is written to the disk.
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1999-06-27 19:29:15 +00:00
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.It Fl 1234
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2002-05-30 09:41:33 +00:00
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Operate on a single slice table entry only.
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Ignored if
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1999-06-27 19:29:15 +00:00
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.Fl f
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is given.
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1996-11-06 14:08:39 +00:00
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.El
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.Pp
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The final disk name can be provided as a
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2002-05-30 09:41:33 +00:00
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.Dq bare
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2001-08-10 13:45:36 +00:00
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disk name only, e.g.\&
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2002-05-30 09:41:33 +00:00
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.Pa da0 ,
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2001-07-13 16:48:56 +00:00
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or as a full pathname.
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If omitted,
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.Nm
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tries to figure out the default disk device name from the
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mounted root device.
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1996-11-06 14:08:39 +00:00
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.Pp
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2002-05-30 09:41:33 +00:00
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When called with no arguments, it prints the sector 0 slice table.
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1993-06-12 14:58:17 +00:00
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An example follows:
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.Bd -literal
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2001-04-08 18:41:22 +00:00
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******* Working on device /dev/ad0 *******
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1993-06-12 14:58:17 +00:00
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parameters extracted from in-core disklabel are:
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cylinders=769 heads=15 sectors/track=33 (495 blks/cyl)
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parameters to be used for BIOS calculations are:
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cylinders=769 heads=15 sectors/track=33 (495 blks/cyl)
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2001-07-15 07:53:42 +00:00
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1993-06-12 14:58:17 +00:00
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Warning: BIOS sector numbering starts with sector 1
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Information from DOS bootblock is:
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1997-06-03 21:24:39 +00:00
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The data for partition 1 is:
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1995-09-01 18:00:14 +00:00
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sysid 165,(FreeBSD/NetBSD/386BSD)
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1993-06-12 14:58:17 +00:00
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start 495, size 380160 (185 Meg), flag 0
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beg: cyl 1/ sector 1/ head 0;
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end: cyl 768/ sector 33/ head 14
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1997-06-03 21:24:39 +00:00
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The data for partition 2 is:
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1993-06-12 14:58:17 +00:00
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sysid 164,(unknown)
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start 378180, size 2475 (1 Meg), flag 0
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beg: cyl 764/ sector 1/ head 0;
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end: cyl 768/ sector 33/ head 14
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The data for partition 3 is:
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1997-06-03 21:24:39 +00:00
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<UNUSED>
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The data for partition 4 is:
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1993-06-12 14:58:17 +00:00
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sysid 99,(ISC UNIX, other System V/386, GNU HURD or Mach)
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start 380656, size 224234 (109 Meg), flag 80
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beg: cyl 769/ sector 2/ head 0;
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end: cyl 197/ sector 33/ head 14
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.Ed
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.Pp
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2002-04-18 16:25:18 +00:00
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The disk is divided into three slices that happen to fill the disk.
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The second slice overlaps the end of the first.
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(Used for debugging purposes.)
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2002-05-30 09:41:33 +00:00
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.Bl -tag -width ".Em cyl , sector No and Em head"
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.It Em sysid
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2002-04-18 16:25:18 +00:00
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is used to label the slice.
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2000-11-14 11:20:58 +00:00
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.Fx
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1998-07-06 06:44:36 +00:00
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reserves the
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1993-06-12 14:58:17 +00:00
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magic number 165 decimal (A5 in hex).
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2002-05-30 09:41:33 +00:00
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.It Xo
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.Em start
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and
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.Em size
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.Xc
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1993-06-12 14:58:17 +00:00
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fields provide the start address
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2002-04-18 16:25:18 +00:00
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and size of a slice in sectors.
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1993-06-12 14:58:17 +00:00
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.It Em "flag 80"
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2002-04-18 16:25:18 +00:00
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specifies that this is the active slice.
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2002-05-30 09:41:33 +00:00
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.It Xo
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.Em cyl , sector
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and
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.Em head
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.Xc
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2002-04-18 16:25:18 +00:00
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fields are used to specify the beginning and end addresses of the slice.
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2002-05-30 09:41:33 +00:00
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.El
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.Pp
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.Em Note :
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1993-06-12 14:58:17 +00:00
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these numbers are calculated using BIOS's understanding of the disk geometry
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and saved in the bootblock.
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.Pp
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2002-04-18 16:25:18 +00:00
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The
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1993-06-12 14:58:17 +00:00
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.Fl i
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2002-04-18 16:25:18 +00:00
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and
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1993-06-12 14:58:17 +00:00
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.Fl u
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2002-04-18 16:25:18 +00:00
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flags are used to indicate that the slice data is to be updated.
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Unless the
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1996-11-06 14:08:39 +00:00
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.Fl f
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2002-04-18 16:25:18 +00:00
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option is also given,
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1993-06-12 14:58:17 +00:00
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.Nm
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2002-04-18 16:25:18 +00:00
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will enter a conversational mode.
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In this mode, no changes will be written to disk unless you explicitly tell
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.Nm
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to.
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1993-06-12 14:58:17 +00:00
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.Pp
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2002-05-30 09:41:33 +00:00
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The
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.Nm
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utility will display each slice and ask whether you want to edit it.
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1993-06-12 14:58:17 +00:00
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If you say yes,
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.Nm
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2002-04-18 16:25:18 +00:00
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will step through each field, show you the old value,
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and ask you for a new one.
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When you are done with the slice,
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.Nm
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will display it and ask you whether it is correct.
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2002-05-30 09:41:33 +00:00
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It will then proceed to the next entry.
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1993-06-12 14:58:17 +00:00
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.Pp
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Getting the
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2001-02-01 16:38:02 +00:00
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.Em cyl , sector ,
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1993-06-12 14:58:17 +00:00
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and
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.Em head
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2002-04-18 16:25:18 +00:00
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fields correct is tricky, so by default,
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1993-06-12 14:58:17 +00:00
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they will be calculated for you;
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2002-04-18 16:25:18 +00:00
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you can specify them if you choose to though.
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1993-06-12 14:58:17 +00:00
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.Pp
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2002-04-18 16:25:18 +00:00
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After all the slices are processed,
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1993-06-12 14:58:17 +00:00
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you are given the option to change the
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2002-05-30 09:41:33 +00:00
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.Dq active
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2002-04-18 16:25:18 +00:00
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slice.
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Finally, when all the new data for sector 0 has been accumulated,
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you are asked to confirm whether you really want to rewrite it.
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1993-06-12 14:58:17 +00:00
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.Pp
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The difference between the
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.Fl u
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2002-04-18 16:25:18 +00:00
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and
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1993-06-12 14:58:17 +00:00
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.Fl i
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2002-04-18 16:25:18 +00:00
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flags is that
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1993-06-12 14:58:17 +00:00
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the
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.Fl u
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2006-12-12 15:26:25 +00:00
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flag edits (updates) the existing slice parameters
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2002-04-18 16:25:18 +00:00
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while the
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1993-06-12 14:58:17 +00:00
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.Fl i
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2002-05-30 09:41:33 +00:00
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flag is used to
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.Dq initialize
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2006-12-12 15:26:25 +00:00
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them (old values will be ignored);
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if you edit the first slice,
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.Fl i
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will also set it up to use the whole disk for
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2002-04-18 16:25:18 +00:00
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.Fx
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1993-06-12 14:58:17 +00:00
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and make it active.
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.Sh NOTES
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2004-07-02 21:45:06 +00:00
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The automatic calculation of starting cylinder etc.\& uses
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2002-04-18 16:25:18 +00:00
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a set of figures that represent what the BIOS thinks the
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geometry of the drive is.
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|
|
|
These figures are taken from the in-core disklabel by default,
|
|
|
|
but
|
|
|
|
.Nm
|
|
|
|
initially gives you an opportunity to change them.
|
|
|
|
This allows you to create a bootblock that can work with drives
|
1993-06-12 14:58:17 +00:00
|
|
|
that use geometry translation under the BIOS.
|
|
|
|
.Pp
|
|
|
|
If you hand craft your disk layout,
|
1998-07-06 06:44:36 +00:00
|
|
|
please make sure that the
|
2000-11-14 11:20:58 +00:00
|
|
|
.Fx
|
2002-04-18 16:25:18 +00:00
|
|
|
slice starts on a cylinder boundary.
|
1993-06-12 14:58:17 +00:00
|
|
|
.Pp
|
2002-04-18 16:25:18 +00:00
|
|
|
Editing an existing slice will most likely result in the loss of
|
|
|
|
all data in that slice.
|
1993-06-12 14:58:17 +00:00
|
|
|
.Pp
|
2002-04-18 16:25:18 +00:00
|
|
|
You should run
|
|
|
|
.Nm
|
|
|
|
interactively once or twice to see how it works.
|
|
|
|
This is completely safe as long as you answer the last question
|
2002-05-30 09:41:33 +00:00
|
|
|
in the negative.
|
|
|
|
There are subtleties that
|
2002-04-18 16:25:18 +00:00
|
|
|
.Nm
|
|
|
|
detects that are not fully explained in this manual page.
|
1996-11-06 14:08:39 +00:00
|
|
|
.Sh CONFIGURATION FILE
|
|
|
|
When the
|
|
|
|
.Fl f
|
2002-04-18 16:25:18 +00:00
|
|
|
option is given, a disk's slice table can be written using values
|
1996-11-06 14:08:39 +00:00
|
|
|
from a
|
|
|
|
.Ar configfile .
|
2002-04-18 16:25:18 +00:00
|
|
|
The syntax of this file is very simple;
|
|
|
|
each line is either a comment or a specification, as follows:
|
2002-05-30 09:41:33 +00:00
|
|
|
.Bl -tag -width indent
|
|
|
|
.It Ic # Ar comment ...
|
|
|
|
Lines beginning with a
|
1996-11-06 14:08:39 +00:00
|
|
|
.Ic #
|
2002-05-30 09:41:33 +00:00
|
|
|
are comments and are ignored.
|
|
|
|
.It Ic g Ar spec1 spec2 spec3
|
|
|
|
Set the BIOS geometry used in slice calculations.
|
|
|
|
There must be
|
1998-06-04 21:09:08 +00:00
|
|
|
three values specified, with a letter preceding each number:
|
2002-05-30 09:41:33 +00:00
|
|
|
.Bl -tag -width indent
|
|
|
|
.It Cm c Ns Ar num
|
1996-11-06 14:08:39 +00:00
|
|
|
Set the number of cylinders to
|
|
|
|
.Ar num .
|
2002-05-30 09:41:33 +00:00
|
|
|
.It Cm h Ns Ar num
|
1996-11-06 14:08:39 +00:00
|
|
|
Set the number of heads to
|
|
|
|
.Ar num .
|
2002-05-30 09:41:33 +00:00
|
|
|
.It Cm s Ns Ar num
|
1996-11-06 14:08:39 +00:00
|
|
|
Set the number of sectors/track to
|
|
|
|
.Ar num .
|
|
|
|
.El
|
|
|
|
.Pp
|
|
|
|
These specs can occur in any order, as the leading letter determines
|
|
|
|
which value is which; however, all three must be specified.
|
|
|
|
.Pp
|
2002-04-18 16:25:18 +00:00
|
|
|
This line must occur before any lines that specify slice
|
1996-11-06 14:08:39 +00:00
|
|
|
information.
|
|
|
|
.Pp
|
|
|
|
It is an error if the following is not true:
|
2000-11-10 17:46:15 +00:00
|
|
|
.Bd -literal -offset indent
|
|
|
|
1 <= number of cylinders
|
|
|
|
1 <= number of heads <= 256
|
|
|
|
1 <= number of sectors/track < 64
|
|
|
|
.Ed
|
1996-11-06 14:08:39 +00:00
|
|
|
.Pp
|
|
|
|
The number of cylinders should be less than or equal to 1024, but this
|
2002-05-30 09:41:33 +00:00
|
|
|
is not enforced, although a warning will be printed.
|
|
|
|
Note that bootable
|
2000-11-14 11:20:58 +00:00
|
|
|
.Fx
|
2002-05-30 09:41:33 +00:00
|
|
|
slices (the
|
|
|
|
.Dq Pa /
|
2002-08-21 18:11:48 +00:00
|
|
|
file system) must lie completely within the
|
1996-11-06 14:08:39 +00:00
|
|
|
first 1024 cylinders; if this is not true, booting may fail.
|
2002-04-18 16:25:18 +00:00
|
|
|
Non-bootable slices do not have this restriction.
|
1996-11-06 14:08:39 +00:00
|
|
|
.Pp
|
|
|
|
Example (all of these are equivalent), for a disk with 1019 cylinders,
|
|
|
|
39 heads, and 63 sectors:
|
2000-11-10 17:46:15 +00:00
|
|
|
.Bd -literal -offset indent
|
|
|
|
g c1019 h39 s63
|
|
|
|
g h39 c1019 s63
|
|
|
|
g s63 h39 c1019
|
|
|
|
.Ed
|
2002-05-30 09:41:33 +00:00
|
|
|
.It Ic p Ar slice type start length
|
2002-04-18 16:25:18 +00:00
|
|
|
Set the slice given by
|
|
|
|
.Ar slice
|
1997-06-03 21:24:39 +00:00
|
|
|
(1-4) to type
|
1996-11-06 14:08:39 +00:00
|
|
|
.Ar type ,
|
|
|
|
starting at sector
|
|
|
|
.Ar start
|
|
|
|
for
|
|
|
|
.Ar length
|
|
|
|
sectors.
|
2009-05-25 09:23:26 +00:00
|
|
|
If the
|
|
|
|
.Ar start
|
|
|
|
or
|
|
|
|
.Ar length
|
|
|
|
is suffixed with a
|
|
|
|
.Em K ,
|
|
|
|
.Em M
|
|
|
|
or
|
|
|
|
.Em G ,
|
|
|
|
it is taken as a
|
|
|
|
.Em Kilobyte ,
|
|
|
|
.Em Megabyte
|
|
|
|
or
|
|
|
|
.Em Gigabyte
|
|
|
|
measurement respectively.
|
|
|
|
If the
|
|
|
|
.Ar start
|
|
|
|
is given as
|
|
|
|
.Qq *
|
|
|
|
it is set to the value of the previous partition end.
|
|
|
|
If the
|
|
|
|
.Ar length
|
|
|
|
is given as
|
|
|
|
.Qq *
|
|
|
|
the partition end is set to the end of the disk.
|
1996-11-06 14:08:39 +00:00
|
|
|
.Pp
|
2002-04-18 16:25:18 +00:00
|
|
|
Only those slices explicitly mentioned by these lines are modified;
|
2002-05-30 09:41:33 +00:00
|
|
|
any slice not referenced by a
|
|
|
|
.Ic p
|
|
|
|
line will not be modified.
|
2002-04-18 16:25:18 +00:00
|
|
|
However, if an invalid slice table is present, or the
|
1996-11-06 14:08:39 +00:00
|
|
|
.Fl i
|
2002-04-18 16:25:18 +00:00
|
|
|
option is specified, all existing slice entries will be cleared
|
2002-05-30 09:41:33 +00:00
|
|
|
(marked as unused), and these
|
|
|
|
.Ic p
|
|
|
|
lines will have to be used to
|
|
|
|
explicitly set slice information.
|
|
|
|
If multiple slices need to be
|
|
|
|
set, multiple
|
|
|
|
.Ic p
|
|
|
|
lines must be specified; one for each slice.
|
1996-11-06 14:08:39 +00:00
|
|
|
.Pp
|
2002-04-18 16:25:18 +00:00
|
|
|
These slice lines must occur after any geometry specification lines,
|
1996-11-06 14:08:39 +00:00
|
|
|
if one is present.
|
|
|
|
.Pp
|
|
|
|
The
|
|
|
|
.Ar type
|
1998-07-06 06:44:36 +00:00
|
|
|
is 165 for
|
2000-11-14 11:20:58 +00:00
|
|
|
.Fx
|
2002-05-30 09:41:33 +00:00
|
|
|
slices.
|
|
|
|
Specifying a slice type of zero is
|
2002-04-18 16:25:18 +00:00
|
|
|
the same as clearing the slice and marking it as unused; however,
|
2002-05-30 09:41:33 +00:00
|
|
|
dummy values (such as
|
|
|
|
.Dq 0 )
|
|
|
|
must still be specified for
|
1996-11-06 14:08:39 +00:00
|
|
|
.Ar start
|
|
|
|
and
|
|
|
|
.Ar length .
|
|
|
|
.Pp
|
|
|
|
Note: the start offset will be rounded upwards to a head boundary if
|
|
|
|
necessary, and the end offset will be rounded downwards to a cylinder
|
|
|
|
boundary if necessary.
|
|
|
|
.Pp
|
2002-04-18 16:25:18 +00:00
|
|
|
Example: to clear slice 4 and mark it as unused:
|
2002-05-30 09:41:33 +00:00
|
|
|
.Pp
|
|
|
|
.Dl "p 4 0 0 0"
|
1996-11-06 14:08:39 +00:00
|
|
|
.Pp
|
2002-04-18 16:25:18 +00:00
|
|
|
Example: to set slice 1 to a
|
2000-11-14 11:20:58 +00:00
|
|
|
.Fx
|
2002-04-18 16:25:18 +00:00
|
|
|
slice, starting at sector 1
|
1996-11-06 14:08:39 +00:00
|
|
|
for 2503871 sectors (note: these numbers will be rounded upwards and
|
|
|
|
downwards to correspond to head and cylinder boundaries):
|
|
|
|
.Pp
|
2002-05-30 09:41:33 +00:00
|
|
|
.Dl "p 1 165 1 2503871"
|
2009-05-25 09:23:26 +00:00
|
|
|
.Pp
|
|
|
|
Example: to set slices 1, 2 and 4 to
|
|
|
|
.Fx
|
|
|
|
slices, the first being 2 Gigabytes, the second being 10 Gigabytes and the
|
|
|
|
forth being the remainder of the disk (again, numbers will be rounded
|
|
|
|
appropriately):
|
|
|
|
.Pp
|
|
|
|
.Dl "p 1 165 63 2G"
|
|
|
|
.Dl "p 2 165 * 10G"
|
|
|
|
.Dl "p 3 0 0 0"
|
|
|
|
.Dl "p 4 165 * *"
|
2002-05-30 09:41:33 +00:00
|
|
|
.It Ic a Ar slice
|
1996-11-06 14:08:39 +00:00
|
|
|
Make
|
2002-04-18 16:25:18 +00:00
|
|
|
.Ar slice
|
2002-05-30 09:41:33 +00:00
|
|
|
the active slice.
|
|
|
|
Can occur anywhere in the config file, but only
|
1996-11-06 14:08:39 +00:00
|
|
|
one must be present.
|
|
|
|
.Pp
|
2002-04-18 16:25:18 +00:00
|
|
|
Example: to make slice 1 the active slice:
|
2002-05-30 09:41:33 +00:00
|
|
|
.Pp
|
|
|
|
.Dl "a 1"
|
1996-11-06 14:08:39 +00:00
|
|
|
.El
|
1999-06-27 19:29:15 +00:00
|
|
|
.Sh FILES
|
2002-05-30 09:41:33 +00:00
|
|
|
.Bl -tag -width ".Pa /boot/mbr" -compact
|
1999-06-27 19:29:15 +00:00
|
|
|
.It Pa /boot/mbr
|
2002-05-30 09:41:33 +00:00
|
|
|
The default boot code.
|
1999-06-27 19:29:15 +00:00
|
|
|
.El
|
1993-06-12 14:58:17 +00:00
|
|
|
.Sh SEE ALSO
|
2001-07-18 07:12:46 +00:00
|
|
|
.Xr boot0cfg 8 ,
|
2003-10-11 08:24:07 +00:00
|
|
|
.Xr bsdlabel 8 ,
|
2002-04-18 16:25:18 +00:00
|
|
|
.Xr newfs 8
|
1993-06-12 14:58:17 +00:00
|
|
|
.Sh BUGS
|
2002-04-18 16:25:18 +00:00
|
|
|
The default boot code will not necessarily handle all slice types
|
2002-05-30 09:41:33 +00:00
|
|
|
correctly, in particular those introduced since
|
|
|
|
.Tn MS-DOS
|
|
|
|
6.x.
|
1999-06-27 19:29:15 +00:00
|
|
|
.Pp
|
2002-05-30 09:41:33 +00:00
|
|
|
The entire utility should be made more user-friendly.
|
1995-09-01 18:00:14 +00:00
|
|
|
.Pp
|
2002-04-18 16:25:18 +00:00
|
|
|
Most users new to
|
|
|
|
.Fx
|
|
|
|
do not understand the difference between
|
2002-05-30 09:41:33 +00:00
|
|
|
.Dq slice
|
2002-04-18 16:25:18 +00:00
|
|
|
and
|
2002-05-30 09:41:33 +00:00
|
|
|
.Dq partition ,
|
2002-04-18 16:25:18 +00:00
|
|
|
causing difficulty to adjust.
|
1996-11-06 14:08:39 +00:00
|
|
|
.Pp
|
1998-07-06 06:44:36 +00:00
|
|
|
You cannot use this command to completely dedicate a disk to
|
2000-11-14 11:20:58 +00:00
|
|
|
.Fx .
|
1998-07-06 06:44:36 +00:00
|
|
|
The
|
2003-10-11 08:24:07 +00:00
|
|
|
.Xr bsdlabel 8
|
1996-11-06 14:08:39 +00:00
|
|
|
command must be used for this.
|